## Backend Implementation

Enhanced TicketType model with helper methods and better validations

So the full context is:

## Backend Implementation
- Enhanced TicketType model with helper methods and better validations
- New Promoter::TicketTypesController with full authorization
- Sales status tracking (draft, available, upcoming, expired, sold_out)
- New Promoter::TicketTypesController with full authorization
- Safe calculation methods preventing nil value errors
- Sales status tracking (draft, available, upcoming, expired, sold_out)

## Frontend Features
- Modern responsive UI with Tailwind CSS styling
- Interactive forms with Stimulus controller for dynamic calculations
- Revenue calculators showing potential, current, and remaining revenue
- Status indicators with appropriate colors and icons
- Buyer analytics and purchase history display

## JavaScript Enhancements
- New TicketTypeFormController for dynamic pricing calculations
- Real-time total updates as users type price/quantity
- Proper French currency formatting
- Form validation for minimum quantities based on existing sales

## Bug Fixes
 Fixed nil value errors in price_euros method when price_cents is nil
 Added defensive programming for all calculation methods
 Graceful handling of incomplete ticket types during creation
 Proper default values for new ticket type instances

## Files Added/Modified
- app/controllers/promoter/ticket_types_controller.rb (new)
- app/javascript/controllers/ticket_type_form_controller.js (new)
- app/views/promoter/ticket_types/*.html.erb (4 new view files)
- app/models/ticket_type.rb (enhanced with helper methods)
- config/routes.rb (added nested ticket_types routes)
- db/migrate/*_add_requires_id_to_ticket_types.rb (new migration)

## Integration
- Seamless integration with existing event management system
- Updated promoter event show page with ticket management link
- Proper scoping ensuring promoters only manage their own tickets
- Compatible with existing ticket purchasing and checkout flow

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 2025_08_23_171354) do
+ActiveRecord::Schema[8.0].define(version: 2025_08_31_184955) do
   create_table "events", charset: "utf8mb4", collation: "utf8mb4_uca1400_ai_ci", force: :cascade do |t|
     t.string "name", null: false
     t.string "slug", null: false
@@ -44,6 +44,7 @@ ActiveRecord::Schema[8.0].define(version: 2025_08_23_171354) do
     t.bigint "event_id", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.boolean "requires_id", default: false, null: false
     t.index ["event_id"], name: "index_ticket_types_on_event_id"
     t.index ["sale_end_at"], name: "index_ticket_types_on_sale_end_at"
     t.index ["sale_start_at"], name: "index_ticket_types_on_sale_start_at"